Stainless Steel 20mm Conduit

[Pete999]

Got to ask Watersparky, why stainless@

 

[mache]

SS Dies and Rubber Clamp set for the Hilmore especially if bending is involved otherwise you peel the stainless coating off. Bending is a lot harder. Hope you got an able bodied apprentice with you.

Not sure what material you were using but it sure wasn't stainless steel if the coating peeled off.
Agree that SS can suffer cross contamination, so rubber faced or brass protection shims in clamps. Hardened carbon steel dies will be OK but must be lubricated to stop pickup and galling. Never use a standard wire brush for deburring or swarf removal. If you need or want to use one then source a stainless steel wire brush.